I’m the author of the original posts on https://oskarjwhansen.org and can confirm that the Star Map restoration project finished near the end of 2025. I’d been planning to get an announcement post up this week but saw the HN attention and wanted to put fears to rest.

Also, since y’all seem interested, feel free to AMA.

“It is likely that at least major portions of the Hoover Dam will still be in place hundreds of thousands of years from now.”

From the article itself, the Pyramids are only 12,000 years old. Every other Ancient Wonder has been destroyed.

Essentially there’s a Major Cataclysm about every 10,000 years, and a ‘Minor’ one about every 5000 years (Burkle Crater impact being the most recent).

How do you assume any parts of the Hoover Dam would be intact or even visible “hundreds of thousands of years from now”?

That quote actually comes from Zander Rose’s Long Now Foundation article, not from me or Oskar Hansen.